LED BLUE CLEAR T-1 T/H CMD264-UBC Equivalent & Substitute Parts

Part Overview

The CMD264-UBC is a blue LED indication component manufactured by Visual Communications Company (VCC) in a T-1 through-hole radial package. This discrete LED operates at a forward voltage of 4.9V with a 250mcd brightness rating and features a clear, domed lens with a 30° viewing angle. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, maintenance, and new design implementations where equivalent functionality is required.

Substiute Parts

CMD264-UBC

Visual Communications Company - VCCIn Stock: 766CMD264-UBC Datasheet

Current PartRFQ

HLMP-KB45-A0000

Broadcom LimitedIn Stock: 14544HLMP-KB45-A0000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMD264-UBC is determined by strict adherence to the following critical parameters:

Physical Compatibility Requirements:

• Lens size must be 3mm, T-1 format
• Mounting type must be through-hole radial configuration
• Lens style must be round with domed top
• Lens color and transparency must be colorless and clear

Electrical Compatibility Requirements:

• Color must be blue
• Configuration must be standard
• Current test rating must be 20mA
• Regulatory compliance must include ROHS3 and REACH Unaffected status

The HLMP-KB45-A0000 manufactured by Broadcom Limited meets all physical and electrical compatibility criteria for substitution with the CMD264-UBC. Both components share identical lens specifications, mounting methodology, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The HLMP-KB45-A0000 is the qualified substitute for the obsolete CMD264-UBC based on the following engineering criteria:

Physical Fit and Mounting: Both components utilize identical T-1 through-hole radial packaging with matching lens geometry (3mm round domed top, colorless clear lens). PCB footprint compatibility is assured for direct replacement in existing designs.

Regulatory Compliance: Both the CMD264-UBC and HLMP-KB45-A0000 maintain ROHS3 compliance and REACH Unaffected status, satisfying environmental and regulatory requirements for industrial and commercial applications.

Product Status: The CMD264-UBC is obsolete with limited inventory availability (726 pcs). The HLMP-KB45-A0000 is active production with substantial inventory (14495 pcs), ensuring long-term supply chain continuity and cost stability.

Electrical Performance Differences: The substitute part operates at a lower forward voltage (3.2V vs. 4.9V) and reduced brightness (30mcd vs. 250mcd). Circuit design modifications to current-limiting resistor values are required to accommodate the lower forward voltage. The reduced brightness rating necessitates evaluation against application-specific illumination requirements.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-KB45-A0000 be used as a direct drop-in replacement for the CMD264-UBC?

A: Physical mounting compatibility is confirmed. However, electrical circuit modifications are required due to the 1.7V difference in forward voltage (3.2V vs. 4.9V). Recalculation of series current-limiting resistor values is mandatory to maintain proper LED operation at 20mA test current.

Q: What are the brightness differences between these two components?

A: The CMD264-UBC provides 250mcd brightness, while the HLMP-KB45-A0000 provides 30mcd brightness. This 8.3:1 brightness ratio represents a significant difference. Applications requiring high-brightness indication must evaluate whether the reduced output of the substitute meets functional requirements.

Q: Are there viewing angle differences that affect application suitability?

A: Yes. The CMD264-UBC has a 30° viewing angle, while the HLMP-KB45-A0000 has a 40° viewing angle. The wider viewing angle of the substitute may be advantageous for applications requiring visibility from multiple angles, but this difference must be verified against specific application requirements.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the CMD264-UBC and HLMP-KB45-A0000 are ROHS3 compliant and REACH Unaffected, satisfying equivalent environmental and regulatory requirements.

Q: What is the wavelength difference between these LEDs?

A: The CMD264-UBC has a peak wavelength of 430nm, while the HLMP-KB45-A0000 has a peak wavelength of 464nm. Both emit blue light, but the substitute produces a slightly longer wavelength (more cyan-shifted) blue. Visual color perception differences may be minimal in most applications.

Q: Are there height differences that affect PCB layout?

A: Yes. The CMD264-UBC has a maximum height of 4.50mm, while the HLMP-KB45-A0000 has a maximum height of 6.35mm. This 1.85mm difference must be verified against PCB clearance requirements, particularly in space-constrained designs or applications with height restrictions.

Q: What inventory status should influence my selection?

A: The CMD264-UBC is obsolete with 726 pcs available. The HLMP-KB45-A0000 is in active production with 14495 pcs available. For new designs or long-term production requirements, the active-status substitute ensures supply chain reliability and cost predictability.